Dichlorosilylene


Gas phase thermochemistry data

Go To: Top, Reaction thermochemistry data, Gas phase ion energetics data, References, Notes

Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.

Quantity Value Units Method Reference Comment
Δfgas-40.301kcal/molReviewChase, 1998Data last reviewed in December, 1977
Quantity Value Units Method Reference Comment
gas,1 bar67.232cal/mol*KReviewChase, 1998Data last reviewed in December, 1977

Gas Phase Heat Capacity (Shomate Equation)

Cp° = A + B*t + C*t2 + D*t3 + E/t2
H° − H°298.15= A*t + B*t2/2 + C*t3/3 + D*t4/4 − E/t + F − H
S° = A*ln(t) + B*t + C*t2/2 + D*t3/3 − E/(2*t2) + G
    Cp = heat capacity (cal/mol*K)
    H° = standard enthalpy (kcal/mol)
    S° = standard entropy (cal/mol*K)
    t = temperature (K) / 1000.

View plot Requires a JavaScript / HTML 5 canvas capable browser.

View table.

Temperature (K) 298. to 6000.
A 13.69120
B 0.238209
C -0.098767
D 0.015113
E -0.136547
F -44.84969
G 82.96690
H -40.30000
ReferenceChase, 1998
Comment Data last reviewed in December, 1977

Reaction thermochemistry data

Go To: Top, Gas phase thermochemistry data, Gas phase ion energetics data, References, Notes

Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.

Data compiled by: John E. Bartmess

Note: Please consider using the reaction search for this species. This page allows searching of all reactions involving this species. A general reaction search form is also available. Future versions of this site may rely on reaction search pages in place of the enumerated reaction displays seen below.

Individual Reactions

(CAS Reg. No. 27121-81-9 • 4294967295Cl2Si) + Cl2Si = CAS Reg. No. 27121-81-9

By formula: (CAS Reg. No. 27121-81-9 • 4294967295Cl2Si) + Cl2Si = CAS Reg. No. 27121-81-9

Quantity Value Units Method Reference Comment
Δr53.7 ± 3.3kcal/molCIDTPoutsma, Schroeder, et al., 2004gas phase

Gas phase ion energetics data

Go To: Top, Gas phase thermochemistry data, Reaction thermochemistry data, References, Notes

Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.

Data compiled as indicated in comments:
LBLHLM - Sharon G. Lias, John E. Bartmess, Joel F. Liebman, John L. Holmes, Rhoda D. Levin, and W. Gary Mallard
LLK - Sharon G. Lias, Rhoda D. Levin, and Sherif A. Kafafi
B - John E. Bartmess

View reactions leading to Cl2Si+ (ion structure unspecified)

Electron affinity determinations

EA (eV) Method Reference Comment
0.77 ± 0.13EIAEPabst, Margrave, et al., 1977From SiCl4; G3MP2B3 calculations indicate an EA of ca. 1.2 eV; B
>2.51512EIAEJaeger and Henglein, 1968From SiCl4; G3MP2B3 calculations indicate an EA of ca. 1.2 eV; B

Ionization energy determinations

IE (eV) Method Reference Comment
10.93 ± 0.10EIIhle, Wu, et al., 1978LLK
10.35PEBock, Solouki, et al., 1985Vertical value; LBLHLM
10.35PEBock, Solouki, et al., 1985Vertical value; LBLHLM

Appearance energy determinations

Ion AE (eV) Other Products MethodReferenceComment
ClSi+12.50 ± 0.10ClEIIhle, Wu, et al., 1978LLK

References

Go To: Top, Gas phase thermochemistry data, Reaction thermochemistry data, Gas phase ion energetics data, Notes

Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.

Chase, 1998
Chase, M.W., Jr., NIST-JANAF Themochemical Tables, Fourth Edition, J. Phys. Chem. Ref. Data, Monograph 9, 1998, 1-1951. [all data]

Poutsma, Schroeder, et al., 2004
Poutsma, J.C.; Schroeder, O.E.; Squires, R.R., Experimental chloride ion affinities and theoretical predictions for the absolute heats of formation of SiCl2 and SiClF, Chem. Phys. Lett., 2004, 389, 4-6, 433-437, https://doi.org/10.1016/j.cplett.2004.03.137 . [all data]

Pabst, Margrave, et al., 1977
Pabst, R.E.; Margrave, J.L.; Franklin, J.L., Electron impact studies of the tetrachlorides and tetrabromides of silicon and germanium, Int. J. Mass Spectrom. Ion Phys., 1977, 25, 361. [all data]

Jaeger and Henglein, 1968
Jaeger, K.; Henglein, A., Die Bildung negativer Ionen aus SiCl4 und organischen Siliciumchloriden durch Elektronenstoss, Z. Naturfor., 1968, 23A, 1122. [all data]

Ihle, Wu, et al., 1978
Ihle, H.R.; Wu, C.H.; Miletic, M.; Zmbov, K.F., Mass spectrometric studies of gas species in the systems Si-Cl and Si-Li, Adv. Mass Spectrom., 1978, 7, 670. [all data]

Bock, Solouki, et al., 1985
Bock, H.; Solouki, B.; Maier, G., SiCl2: Photoelektronenspektroskopische Optimierung verschiedener Synthesen, Angew. Chem., 1985, 97, 205. [all data]


Notes

Go To: Top, Gas phase thermochemistry data, Reaction thermochemistry data, Gas phase ion energetics data, References